Acetylene-gas burner



(No Model.)

E. J. DOLAN.

AGETYLENE GAS BURNER.

No. 602,885. Patented Apr. 26, 1898.

UNITED STATES PATENT rrrcn.

EDVVARD J. DOLAN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY

MESNE ASSIGNMENTS, TO THE AGETYLENE HOUSE LIGHTING COM- PANY, OF W'EST VIRGINIA.

ACE'TYLENE-GAS BURNER.

SPECIFICATION forming part Of Letters Patent NO. 602,83 5, dated April. 26, 1898.

Application filed January 6, 1897. Renewed March 19, 1898. Serial No. 674,535. (No model.)

To (0% whont it may concern: 7

Be it known that I, EDWARD J. DOLAN, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, haveinvented certain sion of a burner of the character described which will permit of the use of metal in the construction of the burner, thus dispensing with the lava tips, which, on account of the extreme heat to which burners of former constructions have been subjected ,were rendered necessary.

The invention has for a further object the provision of a burner in which a removable cap is provided, which cap is designed to be fitted over the burner proper, the aperture in the tip of the cap being of larger diameter than the aperture in the inclosed burner, and the blaze being seated upon this enlarged opening in the cap the tip of the inclosed burner is protected in a great measure from the extreme heat, while at the same time the enlarged opening in the outer cap is far less liable to obstruction from corrosion or deposits of any kind than would be the case if the blaze were seated at the necessarily-contracted outlet at the tip of the inclosed burner.

A further object of the invention resides in the provision of an air-current within the inclosed outer cap of the burner, whereby the burner is in a measure prevented from overheating and a supply of oxygen is maintained at the point at which the blaze is seated, thus preventing the blaze from smoking and providing a uniform and smokeless flame.

A further object of the invention resides in the provision of two burners of the character described, which burners are inclined at an angle toward each other, so that the blazes at the tips of the two burners will be caused to contact at a point between and slightly above the tips of the burners, thus forming a flat blaze, as will hereinafter appear.

To these ends and to such others as the invention may pertain the same consists in the details of construction and in the peculiar combination, arrangement, and adaptation of parts, all as more fully hereinafter described, shown in the accompanying drawings, and then specifically defined in the appended claim.

The invention is clearly illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form a part of this specification, like letters of reference indicating the same parts throughout the several views, and in which drawings Figure l is a side view of a duplex burner embodying my invention, one of the burners, with its inclosed cap, being shown in longitudinal section in order to better illustrate the details of construction. Fig. 2 is a perspective view of one of the burners, the outer removable cap being indicated in dotted lines. Fig. 3 is a side view of the outer cap.

Reference now being had to the details of the drawings by letter, A designates the gaspipe, and B the pipes communicating therewith and provided at their ends with the burners O. The said burners O are of steel, iron, or other metal and are screw-threaded to engage a corresponding screw-thread upon the gas-pipe, or they may be attached in any suitable manner. The body portion of the burner O is preferably cylindrical, as shown, and the tip of the burner c is of conical form, the base of the cone being provided with flattened portions 0 which radiate at right angles from the body portion 0 of the burner at intervals of the circumference of the same, the outer edges of the said radiating portions 0 being inclined at an angle coincident with the outer face of the conical portion 0 of the tip. At the lower end of the body portion of the burner 0 arms D are provided, which arms e2 tend at right angles to the said body portion in form and of a length sufficient to afford an intervening space between the tip of the inclosed burner O and the tip of the cap when the said cap is in place upon the burner.

The burner O is provided with an internal chamber F, which at its lower end has a diameter equal to the diameter of the opening in the gas-pipe to which the burner is attached, while at its opposite end this internal chamber F is contracted uniformly as it approaches the tip of the burner, where an exceedingly small opening G is provided. The openingd-I in the tip of the outer casing is of a diameter considerably greater than the diameter of the opening G in the burner-tip.

The operation of the burner as, following a the foregoing description of construction will be clearly apparent. It will be seen that while the gas is being forced under high pressure to the burner it will be expelled through the minute opening G at the tip of the inner burner and will pass through the larger opening H in the tip of the outer cap, where it is ignited. The air entering at the lower end of the outer cap, as indicated in arrows in Fig. 1 of the drawings, will mix with the gas within the space intervening between the point of the inner burner and the opening in the outer cap, thus insuring a supply of oxygen to the flame at the point of the outer cap at which the flame is seated. A constant and uniform supply of air will thus be maintained within the outer cap E, and this supply of air will serve, to prevent the inner burner from overheating and at the same time will render the blaze smokeless, as will readily appear.

It will be observed that, in a burner of the construction which I have described the outer cap E may be readily removed and replaced and that its construction is such as to permit of its being readily cleaned when occasion may require, and it will be further observed that the opening at the tip of the outer cap,

being of much greater diameter than the opening in the, point of the inner burner,

which, on account of the great pressure which is imparted to the gas, is necessarily exceedingly contracted, will prevent the obstruction of the outlet, and thus insure a uniform blaze, which is of great importance in cases in which the burners are used as duplex burners, in which it is necessary that the blaze should be uniform from both burners in order to secure a perfect flame at the point of contact of the gas from the two burners. It will be further observed that by the use of the outer cap E not only is the overheating of the inner inclosed tip prevented, but at the same time the gas is in a measure heated before it emerges from the aperture in the outer tip, thereby insuring more perfect combustion and providing a much brighter flame.

While in the drawings I have shown a duplex burner, I donot desire to limit myself in its use. to a duplex burner, as it is at once evident that it isequally well adapted for use in a single burner.

Having thusv described my invention, what I claim to be new, and desire to secure by Letters Patent, is

A burner for acetylene gas, the same consisting in a body portion, having one of its ends provided with a conical tip, and radiating portions 0 and its opposite end provided with arms, having shoulders, as described, the said body portion being provided with an internal chamber, contracted at the point of the top, and an external cap adapted to be fitted overthe inner burner, said external cap being providedat its tip with an opening larger than the opening inthe tip of the inner burner, and an air space or chamber between the tips of the inner and outer burners, substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

EDWARD J. DOLAN.

Witnesses:

A. L. I-IoUGH, FRANKLIN H. HOUGH. 

